<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>列表项显示符号</title>
  <style type="text/css">
    ul{
      list-style-type: square;
    }
    ol{
      list-style-type: decimal;
    }
  </style>
</head>
<body>
<h3>红色</h3>
<ul>
  <li>大红</li>
  <li>朱红</li>
  <li>嫣红</li>
</ul>
<h3>蓝色</h3>
<ol>
  <li>群青</li>
  <li>普蓝</li>
  <li>湖蓝</li>
</ol>
</body>
</html>